Small scale additions of native plants fail to increase beneficial insect richness in urban gardens
Small scale additions of native plants fail to increase beneficial insect richness in urban gardens
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DOI：
10.1111/j.1752-4598.2010.00103.x
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发表时间：
2011-05-01
影响因子：
3.5
通讯作者：
Langellotto, Gail A.
中科院分区：
文献类型：
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作者：
Matteson, Kevin C.;Langellotto, Gail A.
1.尽管对野生动物园艺的兴趣越来越大，但测试花园改造的保护价值的实验却很少，特别是在高度城市化的社区。在本文中，我们评估的能力，离散添加本地野花（70株的7种植物，并随后监测2年），以增加物种丰富度的有益昆虫，包括蜜蜂，蝴蝶和捕食性黄蜂在纽约市社区花园。我们还评估了这些昆虫群体在城市花园研究地点对本地和引进花卉的总体使用情况。3.贝叶斯分析没有发现一个强大的影响，本地植物添加有益昆虫丰富度，校正后，先前的花卉丰富度。此外，在这些花园中，蝴蝶和切叶蜂大量利用引进的观赏花卉和作物花卉，即使当地花卉也存在。我们的研究结果表明，外来园林植物的利用，并在保持丰富的，有益的昆虫在城市化景观的重要。此外，花园操作需要比通常推荐的更实质性，如果他们要显着影响城市花园中有益昆虫的丰富性。
1. Despite increasing interest in gardening for wildlife, experiments testing the conservation value of garden alterations are scarce, particularly in heavily urbanised landscapes.2. In this paper, we assess the ability of discrete additions of native wildflowers (70 plants of seven plant species added and subsequently monitored for 2 years) to augment species richness of beneficial insects including bees, butterflies and predatory wasps in New York City community gardens. We also evaluate the overall use of native and introduced flowers by these insect groups in the urban garden study sites.3. Bayesian analyses failed to find a strong influence of the native plant additions on beneficial insect richness, after correcting for prior floral abundance.4. In addition, butterflies and megachilid (leaf-cutter) bees were found to heavily utilise introduced ornamental and crop flowers in these gardens, even when native flowers were present.5. Our results suggest that exotic garden plants are utilised by, and important in maintaining richness of, beneficial insects in urbanised landscapes. Furthermore, garden manipulations need to be more substantial than often recommended, if they are to significantly influence the richness of beneficial insects in urban gardens.